<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>

<body>
    <script src="./jquery.js"></script>
    <script>
        $(function() {
            console.log(1);
            // setTimeout(function() {
            //     console.log(2)
            // }, 0)

            $.get('http://localhost:3000/data', function() {
                console.log(4);
            })
            console.log(3);
        })
    </script>
</body>

</html>